//Shirasu Azusa 2024.7
#include <bits/stdc++.h>
#define fi first
#define se second
#define eb emplace_back
#define mp make_pair
using namespace std;
typedef long double ld;
typedef long long ll;
typedef unsigned long long ull;
typedef __int128 i128;
template<class T,class S>
bool chmax(T &a,const S b) {return (a<b?a=b,1:0);}
template<class T,class S>
bool chmin(T &a,const S b) {return (a>b?a=b,1:0);}
int popcnt(int x) {return __builtin_popcount(x);}
int popcnt(ll x)  {return __builtin_popcountll(x);}
int topbit(int x) {return (x==0?-1:31-__builtin_clz(x));}
int topbit(ll x)  {return (x==0?-1:63-__builtin_clzll(x));}
int lowbit(int x) {return (x==0?-1:__builtin_ctz(x));}
int lowbit(ll x)  {return (x==0?-1:__builtin_ctzll(x));}

#define int long long
#define rep(i,a,b) for(int i=(a);i<=(b);i++)
#define per(i,a,b) for(int i=(a);i>=(b);i--)
typedef pair<int,int> pii;  
typedef vector<int> vi;
typedef vector<pii> vp;
typedef tuple<int,int,int> tiii;
int read() {
  int x=0,w=1; char c=getchar(); 
  while(!isdigit(c)) {if(c=='-') w=-1; c=getchar();}
  while(isdigit(c)) {x=x*10+(c-'0'); c=getchar();} 
  return x*w;
}

int pr[7]={2,325,9375,28178,450775,9780504,1795265022};
int ksm(i128 x,i128 y,i128 p,i128 r=1) {
  for(;y;y>>=1,x=x*x%p) if(y&1) r=r*x%p; return r;
}

bool chk(int x,int n) {
  if(x%n==0) return 1; int g=ksm(x,n-1,n); if(g!=1) return 0;
  for(int y=n-1;y>1&&y%2==0;) {
    y=y/2; int g=ksm(x,y,n); 
    if(g==n-1) break; else if(g!=1) return 0;
  } return 1;
}
char work(int n) {
  if(n==2) return 'Y'; else if(n==1||n%2==0||n%5==0) return 'N';
  for(int x:pr) if(!chk(x,n)) return 'N'; return 'Y';
}

signed main() {
  int x; while(scanf("%lld",&x)!=EOF) putchar(work(x)),putchar('\n');
  return 0;
}